Remove SQL Injection from database

Run this script in new query window.

DECLARE @T varchar(255), @C varchar(255);
DECLARE Table_Cursor CURSOR FOR
SELECT a.name, b.name
FROM sysobjects a, syscolumns b
WHERE a.id = b.id AND a.xtype = 'u' AND
(b.xtype = 99 OR
b.xtype = 35 OR
b.xtype = 231 OR
b.xtype = 167);
OPEN Table_Cursor;
FETCH NEXT FROM Table_Cursor INTO @T, @C;
WHILE (@@FETCH_STATUS = 0) BEGIN
EXEC(
'update ['+@T+'] set ['+@C+'] = left(
convert(varchar(8000), ['+@C+']),
len(convert(varchar(8000), ['+@C+'])) - 6 -
patindex(''%tpircs<%'',
reverse(convert(varchar(8000), ['+@C+'])))
)
where ['+@C+'] like ''%%'''
);
FETCH NEXT FROM Table_Cursor INTO @T, @C;
END;

CLOSE Table_Cursor;
DEALLOCATE Table_Cursor;